2022 Ronstan Marine Catalogue - VIEW CATALOGUE




  • Coarse and and fine tuning purchase system
  • Unrivalled 18:1 holding power
  • Dual sided On-Off switch
  • Low friction ball bearing system
  • Lightweight
  • Cheek cut-outs for easy bearing maintenance

  • Share:
Two-speed mainsheet systems allow both coarse and fine tuning in a single purchase system. The system allows fine tuning of the mainsheet when sailing upwind by using one of the sheet tails and keeping the other cleated. Using both the sheets at once allows the trimmer to blow off the main quickly when rounding the top mark and trim on quickly when hardening up after rounding the bottom mark. When fitting to traveller cars, ensure adequate support for the bottom block and use appropriate stand-up spring kit. (Refer to traveller section for more information).
Sheave Ų75 + 50 mm
Max. Rope Ų10 mm
Max. Cable Ų- mm
Pin Ų- mm
M.W.L.1100 kg
B. L.2300 kg
Weight1610 g
  • Two-Speed systems: Mainsheets on sportsboats and keel boats to 12m (40ft)
  • Mainsheets on sportsboats and keelboats to 12m (40')
  • Max. mainsail area, END boom sheeting = 42sq m (452 sq ft)
  • Max. mainsail area, MID boom sheeting = 27sq m (290 sq ft)
  • Carbon Black Acetal ball bearings
  • U.V. stabilised Acetal sheaves, alloy ratchet sheaves
  • Cheek plates: Anodised aluminium
  • Torlon® ratchet pawl
  • Adjustable cleat arms